Evaporator.



e, 1*. ECKAM,

EVAPORATOR.

APPLIOATION FILED DEG. 1e, 1911.

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Patented Feb. 11, 1913.

7 @32N/@Ma CHARLES FRANKLIN ECKA'ELT, GF H0NQLl'l'lllily TERRITORY 0F HAWME, ASSGrliGJ- 0l? i @NE-HALF TG WLLAE GARVE HALL, 0F HONIAULU, TEERTOBJY @E HLWAEE.

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To all whom may cof/wem:

Be it known that CHARLES FRANKLIN Ferrante, a: citisen of the Unitedy States, residing at Honolulu, in the County ofllonolulu and Teri-iter;r` of Hawaii, have invented certain new and useful Improvements in Evaporators; and l do hereby declare the following to be. a full, clear, and exact description of the invention, suoli as Will enable others skilled in the art to which it appertains to niake and use the saine.

rl`his invention relates to evaporators, par ticularly to the. standard or submerged tube type of evaporator.

rlhe object of the invention is to increase the eiliciency of the evaporator by reducing the vapor tension on the surface of the liquor, increasing the upward flow oit vapor. and by decreasing the restraining eect (upon evaporation) oi' the supernatant air, vapor or other gases on thelsurface of the liquor.

The invention vcontenfiplates a lian or the likeadapted to revolve in a horizontal plane immediately above tbe surface of the liquor to be evaporated above the top of 'the calandria, and means for revolving said fan or the like in any suitable manner. ln evaporators of the type i'nentioned, tbe liquor under treatment rises Within tbe tubes of the Calandria and flows rapidly downward tlirongh the larger tube or pipe at the center olf the Calandria, this circulation of the liquor beingeffected by the introduction of steam or vapor in the Calandria and thereirnparting heat to the liquor.

rllie invention further contemplates the utilization of this downward flow' or" the liquor through the center pipe of the ealandria to propel the above mentioned 'fan or the like, as will hereinafter more fully api pear.

l Speciication of Letters Patent. nieuwe@ sied emmer 1e, 1911. sensi ne. eeaeai.

lower tube' plateA e, the tubes 5, and the center pipe 6. The belt is bolted above the upper tube plate 3, and tile bot-torn@ which is provided at its center with tli outlet 9 is bolted below the lower tube plate l in the usual manner, as shown. 1li de fleeting cone 10, supported by feet l?. above the outlet 9, is provided as shown, its inno tion being to divert the flow of liquor from the center pipe 6 and cause same to flow' outwardly and under the lower tube sheet a and thereby prevent same from passing directly downward. and ont 'through the outlet 9.

The vertical shaft l2, With its lower in a suitable step box 13 supported at the apex of the cone l0, and journaled in a suitable anti-friction bearing le supported by a brace l5 to the upper tube sheet 3, is adapted to be revolved. ll desired, the lower end of the shaft l2 may have a hardened point and the step box 13 may have a suitable jmveled bearing in which said point may turn. The shaft l2 is provided with a screw i6 or the like bet'ivcen the step box 13 and the bearing lll. A 'fan i7 or the like is secured to the shaft l2 with it arms extending outward horisontallT immediately above the level oi the liquor above the upper tube plate 3.

lt will noiv be noted, that when tl; rushes down the center pipe it gage tbe Sorenv lo and cause saine to the shaft. 12 to which the tan l? is attached. The fan 17 in revolving reduces the va 'tension on the surface oiI tbe liquor, creases tbe upward iloiv of the vapor in the belt 7 and decreases the restraining; en'ect of tbe supernatantair, vapor or other upon the liquor flowing over theupper Cube plate 3, and that consequently the ellicienciT of the evaporator is increased.

ln carrying out the invention, in order that saine may be operative, the size and pitch of 'the screw lo and of the l? must be so proportioned, to snit the conditions in each ease, ihat the action oi; tbe downward i'low of the liquor upon the serev/ 16 shall in each case exceed the resistance offered to the ian 17 by the vapors it en-l counters When revolving as Well as overcome the friction of the shaft l2.

l claim:

l. ln an evaporator, a fan or the like in;n

mediately above the surface of the liquor,

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and means tor revolving said fan or the like, for the purpose speoied.

2. In an evaporator, a fun or time'x like propelled by the circulating liquor, Sub! stantielly as and for the purpose as specified.

3. In an evaporator, a vertical shaft adapted to revolve in tbe center of the evaporator, a screw or the like secured to said shaft and adapted to be revolved by the cir*- culeting liquor, and a ferr or the like attaohed to said shaft above'said screw, substantially as and for the purpose described.

In an evaporator, a vertical shaft adapted torevolve in the lcenter of the evaplorator, a fan attached to seid shaft and means associated with said shaft adapted to be actuated by the circulating liquortovro- 'volve said fan.

5. In 'au evaporator, the combination with the Calandria tubes of a center tube, a slmft mounted for rotation insaid center tube, a fan attached to said shaft above the calundria tubes and means associated with said.'

shaft adapted to be actuated by the `'liquor flowing through seid center tube to revolve said fen.

In testimony whereof I affix my sign ature, in presence of two witnesses.

CHARLES FRANKLIN ECKART. Witnesses:

RAY B. Rmrow, Roer. J. PRATr. 

